I did amateur choral singing in high school and college. After many years away I thought Id lost my ability to keep pitch when singing. Since practicing with these exercises I can now carry my own in a choir -- it doesnt take long at all. This app looked expensive but its totally worth it. The pitch feedback and breathing techniques are so useful. The verbal intro and instructions make it seem as if you had your own personal music teacher.
Glendalefan about Erol Singer's Studio